Alert archive / New York / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 22, NWS Buffalo, NY

June 20, 20164 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 20, 2016, 11:34 PM EDT for 4 counties in New York. It was in force for 41 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 20, 2016, 11:34 PM EDT (03:34 UTC)
Expired: Jun 21, 2016, 12:15 AM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegany County, NY, Cattaraugus County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 84 km from the middle of the area, began a volume at 03:38 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 20, 11:50 PM EDT	TSTM WND DMG	Houghton, NY	TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.
Jun 20, 11:55 PM EDT	TSTM WND DMG	Caneadea, NY	NUMEROUS TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.
Jun 21, 12:20 AM EDT	TSTM WND DMG	3 Se Birdsall, NY	TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 20, 8:06 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.6 hours before the alert went out and 80 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 874 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1626 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

309 
WUUS51 KBUF 210334
SVRBUF
NYC003-009-051-121-210415-
/O.NEW.KBUF.SV.W.0022.160621T0334Z-160621T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1134 PM EDT MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK...
  NORTHERN ALLEGANY COUNTY IN WESTERN NEW YORK...
  SOUTHEASTERN WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 1215 AM EDT

* AT 1134 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  PORTAGEVILLE...OR 9 MILES SOUTH OF LETCHWORTH STATE PARK...MOVING
  SOUTHEAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  DANSVILLE...LETCHWORTH STATE PARK...ALFRED...BELFAST...RUSHFORD...
  HOUGHTON...PORTAGEVILLE AND CANEADEA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 390 NEAR EXIT 4.
 INTERSTATE 86 BETWEEN EXITS 30 AND 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4232 7842 4262 7833 4256 7766 4253 7766
      4253 7772 4213 7775
TIME...MOT...LOC 0334Z 321DEG 15KT 4251 7798 

HAIL...1.00IN
WIND...60MPH
 
$$

APFFEL

2 follow-up statements

780 
WWUS51 KBUF 210400
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1200 AM EDT TUE JUN 21 2016

NYC009-051-121-210409-
/O.CAN.KBUF.SV.W.0022.000000T0000Z-160621T0415Z/
LIVINGSTON NY-CATTARAUGUS NY-WYOMING NY-
1200 AM EDT TUE JUN 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LIVINGSTON...
NORTHEASTERN CATTARAUGUS AND SOUTHEASTERN WYOMING COUNTIES IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT FOR
WESTERN NEW YORK.

LAT...LON 4231 7830 4248 7828 4247 7772 4213 7775
TIME...MOT...LOC 0359Z 305DEG 38KT 4239 7800 

$$

NYC003-210415-
/O.CON.KBUF.SV.W.0022.000000T0000Z-160621T0415Z/
ALLEGANY NY-
1200 AM EDT TUE JUN 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR NORTHERN ALLEGANY COUNTY...

AT 1159 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BELFAST...OR 17
MILES SOUTH OF LETCHWORTH STATE PARK...MOVING SOUTHEAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
ALFRED...BELFAST...RUSHFORD...HOUGHTON...CANEADEA...ANDOVER...BELMONT AND
ANGELICA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4231 7830 4248 7828 4247 7772 4213 7775
TIME...MOT...LOC 0359Z 305DEG 38KT 4239 7800 

HAIL...1.00IN
WIND...60MPH
 
$$

APFFEL

429 
WWUS51 KBUF 210416
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1216 AM EDT TUE JUN 21 2016

NYC003-210425-
/O.EXP.KBUF.SV.W.0022.000000T0000Z-160621T0415Z/
ALLEGANY NY-
1216 AM EDT TUE JUN 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ALLEGANY COUNTY HAS
EXPIRED...
        
THE STORM WHICH PROMPTED THE WARNING HAS BEEN REPLACED BY ANOTHER
WARNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT FOR
WESTERN NEW YORK.

LAT...LON 4231 7830 4248 7828 4247 7772 4213 7775
TIME...MOT...LOC 0414Z 321DEG 15KT 4239 7800 

$$

APFFEL

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 8:57 PM EDT	Special Marine Warning	BUF		93 min
Jun 20, 9:04 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	56 min
Jun 20, 9:20 PM EDT	Special Marine Warning	BUF		55 min
Jun 20, 9:26 PM EDT	Special Weather Statement	BUF	Erie	34 min
Jun 20, 9:30 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	45 min
Jun 20, 9:43 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	62 min
Jun 20, 9:53 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	37 min
Jun 20, 10:11 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Livingston, Wyoming	49 min
Jun 20, 10:26 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	64 min
Jun 20, 10:33 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	27 min
Jun 20, 10:36 PM EDT	Special Marine Warning	BUF		39 min
Jun 20, 10:39 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	51 min
Jun 20, 10:53 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	52 min
Jun 20, 10:58 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Livingston, Wyoming	47 min
Jun 20, 11:13 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	37 min
Jun 20, 11:20 PM EDT	Flash Flood Warning	BUF	Erie, Wyoming	3 hr
Jun 20, 11:43 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	23 min
Jun 21, 12:15 AM EDT	Severe Thunderstorm Warning	BUF	Allegany	30 min

Nearby

Severe Thunderstorm Warnings in New York, 2016 Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.